AQI Alerts for Wellington, CO

# HEADLINE -------------------- OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 1200 AM TUESDAY # SUMMARY -------------------- The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. # DETAILS -------------------- WHERE Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN 400 PM Monday April 20 to 1200 AM Tuesday April 21 IMPACTS Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. An intrusion of ozone from high in the atmosphere could raise ozone levels into the Unhealthy for Sensitive Groups category Monday afternoon and evening. Lower ozone levels are expected on Tuesday. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado\_summary.aspx If possible, please help us reduce pollution by limiting driving gas and diesel-powered vehicles until at least 4 PM Tuesday, April 21, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone-pollution- and-your-health HEALTH INFORMATION Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion. ISSUED AT Monday, April 20, 2026 at 4:10 PM MDT ISSUED BY Relayed by National Weather Service Boulder CO HEADER Air Quality Alert Message | Colorado Department of Public Health and Environment # AREAS AFFECTED -------------------- Jefferson, Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Larimer, Weld